read_csr_nf_stat
u32 (*read_csr_nf_stat)(void __iomem *csr_base_addr, u32 bank);
ret = check_stat(ops->read_csr_nf_stat, state->ringnfstat, "ringnfstat",
state->ringnfstat = ops->read_csr_nf_stat(base, bank);
csr_ops->read_csr_nf_stat = read_csr_nf_stat;